Multiresolution MoM: a multi-grid approach

The dual isoscalar multi-resolution (DIS-MR) method, previously introduced by the authors, has been shown to solve critical problems of IE-MoM analysis of large and complex structures, having advantages with respect to matrix memory storage and solution time. The intrinsic multiscale nature of the scheme is now used to generate a multi-grid version, that also allows a reduction of the filling time.